1<?xml version="1.0" encoding="UTF-8"?> 2 3 4<!--*********************************************************** 5 * 6 * Licensed to the Apache Software Foundation (ASF) under one 7 * or more contributor license agreements. See the NOTICE file 8 * distributed with this work for additional information 9 * regarding copyright ownership. The ASF licenses this file 10 * to you under the Apache License, Version 2.0 (the 11 * "License"); you may not use this file except in compliance 12 * with the License. You may obtain a copy of the License at 13 * 14 * http://www.apache.org/licenses/LICENSE-2.0 15 * 16 * Unless required by applicable law or agreed to in writing, 17 * software distributed under the License is distributed on an 18 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 19 * KIND, either express or implied. See the License for the 20 * specific language governing permissions and limitations 21 * under the License. 22 * 23 ***********************************************************--> 24 25 26 27<helpdocument version="1.0"> 28<meta> 29<topic id="textsbasicshared03080302xml" indexer="include" status="PUBLISH"> 30<title id="tit" xml-lang="en-US">Rnd Function [Runtime]</title> 31<filename>/text/sbasic/shared/03080302.xhp</filename> 32</topic> 33</meta> 34<body> 35<section id="rnd"> 36<bookmark xml-lang="en-US" branch="index" id="bm_id3148685"> 37<bookmark_value>Rnd function</bookmark_value> 38</bookmark> 39<paragraph role="heading" id="hd_id3148685" xml-lang="en-US" level="1" l10n="U" oldref="1"><link href="text/sbasic/shared/03080302.xhp" name="Rnd Function [Runtime]">Rnd Function [Runtime]</link></paragraph> 40<paragraph role="paragraph" id="par_id3149669" xml-lang="en-US" l10n="U" oldref="2">Returns a random number between 0 and 1.</paragraph> 41</section> 42<paragraph role="heading" id="hd_id3153897" xml-lang="en-US" level="2" l10n="U" oldref="3">Syntax:</paragraph> 43<paragraph role="paragraph" id="par_id3150543" xml-lang="en-US" l10n="U" oldref="4">Rnd [(Expression)]</paragraph> 44<paragraph role="heading" id="hd_id3149655" xml-lang="en-US" level="2" l10n="U" oldref="5">Return value:</paragraph> 45<paragraph role="paragraph" id="par_id3154365" xml-lang="en-US" l10n="U" oldref="6">Double</paragraph> 46<paragraph role="heading" id="hd_id3154909" xml-lang="en-US" level="2" l10n="U" oldref="7">Parameters:</paragraph> 47<paragraph role="paragraph" id="par_id3125864" xml-lang="en-US" l10n="U" oldref="8"> 48<emph>Expression:</emph> Any numeric expression.</paragraph> 49<paragraph role="paragraph" id="par_id3155306" xml-lang="en-US" l10n="U" oldref="12"> 50<emph>Omitted:</emph> Returns the next random number in the sequence.</paragraph> 51<paragraph role="paragraph" id="par_id3147318" xml-lang="en-US" l10n="U" oldref="14">The <emph>Rnd</emph> function only returns values ranging from 0 to 1. To generate random integers in a given range, use the formula in the following example:</paragraph> 52<embed href="text/sbasic/shared/00000003.xhp#errorcode"/> 53<embed href="text/sbasic/shared/00000003.xhp#err5"/> 54<paragraph role="heading" id="hd_id3151118" xml-lang="en-US" level="2" l10n="U" oldref="15">Example:</paragraph> 55<paragraph role="code" id="par_id3145365" xml-lang="en-US" l10n="U" oldref="16">Sub ExampleRandomSelect</paragraph> 56<paragraph role="code" id="par_id3147426" xml-lang="en-US" l10n="U" oldref="17">Dim iVar As Integer</paragraph> 57<paragraph role="code" id="par_id3150011" xml-lang="en-US" l10n="U" oldref="18">iVar = Int((15 * Rnd) -2)</paragraph> 58<paragraph role="code" id="par_id3148575" xml-lang="en-US" l10n="U" oldref="19">Select Case iVar</paragraph> 59<paragraph role="code" id="par_id3154097" xml-lang="en-US" l10n="U" oldref="20">Case 1 To 5</paragraph> 60<paragraph role="code" id="par_id3147124" xml-lang="en-US" l10n="U" oldref="21">Print "Number from 1 to 5"</paragraph> 61<paragraph role="code" id="par_id3155418" xml-lang="en-US" l10n="U" oldref="22">Case 6, 7, 8</paragraph> 62<paragraph role="code" id="par_id3154943" xml-lang="en-US" l10n="U" oldref="23">Print "Number from 6 to 8"</paragraph> 63<paragraph role="code" id="par_id3145800" xml-lang="en-US" l10n="U" oldref="24">Case Is > 8 And iVar < 11</paragraph> 64<paragraph role="code" id="par_id3151074" xml-lang="en-US" l10n="U" oldref="25">Print "Greater than 8"</paragraph> 65<paragraph role="code" id="par_id3154016" xml-lang="en-US" l10n="U" oldref="26">Case Else</paragraph> 66<paragraph role="code" id="par_id3155602" xml-lang="en-US" l10n="U" oldref="27">Print "Outside range 1 to 10"</paragraph> 67<paragraph role="code" id="par_id3150328" xml-lang="en-US" l10n="U" oldref="28">End Select</paragraph> 68<paragraph role="code" id="par_id3154479" xml-lang="en-US" l10n="U" oldref="29">end sub</paragraph> 69</body> 70</helpdocument> 71